BE351040A - - Google Patents
Info
- Publication number
- BE351040A BE351040A BE351040DA BE351040A BE 351040 A BE351040 A BE 351040A BE 351040D A BE351040D A BE 351040DA BE 351040 A BE351040 A BE 351040A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE294877T | 1927-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE351040A true BE351040A (en:Method) |
Family
ID=31894088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE351040D BE351040A (en:Method) | 1927-07-30 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1716893A (en:Method) |
| BE (1) | BE351040A (en:Method) |
| FR (1) | FR661622A (en:Method) |
| GB (1) | GB294877A (en:Method) |
-
0
- BE BE351040D patent/BE351040A/xx unknown
-
1928
- 1928-05-19 FR FR661622D patent/FR661622A/fr not_active Expired
- 1928-06-28 GB GB18724/28A patent/GB294877A/en not_active Expired
- 1928-07-25 US US295272A patent/US1716893A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR661622A (fr) | 1929-07-27 |
| US1716893A (en) | 1929-06-11 |
| GB294877A (en:Method) | 1929-08-15 |